At Social Site, Only the Businesslike Need Apply — SAN FRANCISCO — For a Web site, it could hardly look less exciting. Its pages are heavy with text, much of it a flat blue, and there are few photos and absolutely no videos. — But LinkedIn, the social network for professionals, is dull by design.

Is LinkedIn Worth $1 Billion? — LinkedIn Worth $1 billion? — I think so — It is seriously overvalued — I don't care either way. — The big news tonight is business social network LinkedIn raised $53 million in Series D funding at a valuation of $1 billion.

Flickr Co-founders Join Mass Exodus From Yahoo — Photo sharing site Flickr is one of the leading lights of Yahoo - but cofounders (and husband/wife team) Caterina Fake and Stewart Butterfield won't be around to keep driving the product forward. They are both joining the mass exodus of executives from the company.

Digg this: Reddit goes open source — In the arena of crowd voting sites there is Digg and then there is everyone else. Every once in a while a challenger will come up that looks promising, but it fades away. — For a while that was Netscape (now called Propeller), then it was Mixx …

Microsoft Announces Acquisition of Navic Networks — Navic enables Microsoft to work with industry partners to optimize the delivery and placement of television advertising. — Microsoft Corp. today announced the acquisition of Navic Networks, a leading provider of television advertising solutions.

Microsoft steps big into TV ad world — The company is buying Navic Networks, a Waltham, Mass., company that makes technologies... Microsoft's next advertising frontier is the biggest: television. — The company is buying Navic Networks, a Waltham, Mass., company that makes technologies …

Power User's Guide to Firefox 3 — You already know about Firefox 3's marquee new features, but now it's time to dig deep and unearth the shortcuts, tweaks, and even Easter eggs that Mozilla marketing doesn't mention. In honor of today's official release of Firefox 3—at 10AM Pacific Time …

Experiencing Google's Android — Google may have put to rest the notion that it will be creating a Google phone, but there's still quite a bit of excitement surrounding the Android platform that it is championing. Among the companies that have signed on with its Open Handset Alliance …

Skype 4.0 Beta: It's All About Video — Skype is getting a major, much-needed upgrade: Skype 4.0. President Josh Silverman calls it the “biggest new release in Skype's history.” The new software client, which which will be released here in beta tomorrow (for Windows only), takes up the whole screen.

Google's App Engine breaks down — Google's application-hosting service suffered an outage on Tuesday, highlighting one of the downsides of the new cloud computing services. — Between 9 a.m. and 11:30 a.m. West Coast time and again later in the day, a significant percentage of users trying …

The Coming World of Mobile Sensors — At Supernova 2008 this week we got a glimpse of what's next for mobile; and it has little to do with hardware like the iPhone, software like Google's open-source operating system Android, mobile platforms put forth by Apple, Google, Nokia, Research in Motion, and the carriers.

New Profile Design Update, and New Metrics — As you may have seen on the Facebook Profiles Preview Page last week, we're launching the new profile design in July. We've been going over all the feedback we've received from our developers as well as our users, and have been incorporating some of the valuable feedback into our design.